Experimental and Numerical Characterization of Thermal Bridges in Windows

• Autorzy: Smusz Robert , Bałon Paweł , Kiełbasa Bartłomiej , Rejman Edward , Bembenek Michał , Kowalski Łukasz

Identyfikatory

DOI

10.12913/22998624/159070

• Języki publikacji: EN

Abstrakty

EN

Actions aimed at improving the energy performance of buildings increase the share of heat loss through thermal bridges and windows in a building’s energy balance. This is especially true of buildings currently under construc- tion. In addition, it is known that the correct installation of windows is one of the biggest obstacles that must be overcome in order to achieve higher energy efficiency and reduce the impact of linear thermal bridges. Therefore, the study analysed, numerically and experimentally, the energy properties of PVC window frames with improved metal stiffening profiles, which were introduced to reduce the risk of window frame deformation and reduce leakage caused by faulty installation. The value of the frame thermal transmittance coefficient and the linear heat transfer coefficients were determined numerically. The simulation results showed that filling large air spaces with insulation material allowed for the reduction of the Uf frame’s thermal transmittance coefficient by over 10%. Moreover, where the window connects with the wall, there was a reduction in the linear thermal bridges’ influence on heat losses. The reduction in the linear thermal transmittance coefficient Ψ was 9.6%, 1.0%, and 3.5% for the window sill, jamb, and lintel, respectively, compared to a frame without insulation. Moreover, experimental studies were conducted on the influence of the insulation of the PVC window frame with metal closed stiffening profiles on the linear thermal bridge located at the joint with the glass. It was found that the incidence factor Itb decreased by more than 6%. Thus, there is also a positive effect on the linear thermal bridge at the joint of the glass pane with the window frame.

Słowa kluczowe

EN

window frames; window construction; thermal bridges; thermography

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2023
• Tom: Vol. 17, no 1
• Strony: 315--331
• Opis fizyczny: Bibligr. 55 poz., rys., tab.

Twórcy

autor

Smusz Robert

• Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35–959 Rzeszów, Poland

• https://orcid.org/0000-0001-7369-1162

autor

Bałon Paweł

• Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
• F.H.U. ATUT Marek i Alicja Janeczek, ul. Kościuszki 56, 39-300 Mielec, Poland

• https://orcid.org/0000-0003-3136-7908

autor

Kiełbasa Bartłomiej

• F.H.U. ATUT Marek i Alicja Janeczek, ul. Kościuszki 56, 39-300 Mielec, Poland

• https://orcid.org/0000-0002-3116-2251

autor

Rejman Edward

• Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35–959 Rzeszów, Poland

• https://orcid.org/0000-0003-4716-7513

autor

Bembenek Michał

• Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland

• https://orcid.org/0000-0002-7665-8058

autor

Kowalski Łukasz

• Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland

• https://orcid.org/0000-0002-2866-9000

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).